Receiver REST Adapter POST Method

Hi experts,

I'm working on 3th pary systems and I use Receiver REST Adapter for JSON.

JSON parameters:{"username":"akedas","password":"w8JAYDjoT8C0u7H9","city_id":18,"county_id":1232,"started_at":"2016-05-19 05:00:00","ended_at":"2016-05-19 06:01:00","description":"test-1"}

I created the same parameters with JSON in ESR

Receiver REST Adapter:

I selected XML in Request Data Format because of Service Interface in ESR.

Response Data Format:XML

When I test configuration , service returned invalid content of my parameters as result.

How can I fixed this problem.Please help me.

Best Regards,

Bekir.